<template>
	<u-upload 
	ref="upload"
	:action="action" 
	:max-size="5 * 1024 * 1024"
	max-count="1"
	:multiple="false"
	:before-upload="beforeUpload"
	:custom-btn="true"
	:show-progress="false"
	:form-data="formData" 	
	:show-upload-list="true"
	:deletable="false"
	@on-success="onSuccess"
	>


	
	<u-avatar slot="addBtn" :src="vuex_user.avatar_url" size="140"></u-avatar>
	</u-upload>
</template>

<script>
	let _this = {}
	export default {
		name:"oss-upload",
		data() {
			return {
				action: '',
				formData: {},
				upFileName:''
			};
		},
		created(){
			_this = this
		},
		methods: {
			/* 上传前的钩子 */
			async beforeUpload(index, list) {
				const {file} = list[0]
				// #ifdef H5
				const fileName = file.name
				// #endif
				// #ifndef H5
				const fileName = file.path
				// #endif
			
				// 请求api,获取oss token
				const ossToken = await this.$u.api.authOssToken()
				//设置上传域名
				_this.action = ossToken.host
				// 处理唯一文件名
				const suffix = fileName.slice(fileName.lastIndexOf('.'))
				const upFileName = _this.$u.guid(20) + suffix
				_this.upFileName = upFileName
				console.log(upFileName);
				//设置额外参数

				_this.formData = {
					'key':upFileName,//上传后的文件名
					'policy':ossToken.policy,
					'OSSAccessKeyId':ossToken.accessid,
					'success_action_status':'200',
					'signature':ossToken.signature,
				}
			return true;
			},
			/* 上传成功之后 */
			async onSuccess(){
				//移除预览区域图片
				this.$refs.upload.remove(0)
				//请求api更新头像
				await this.$u.api.userAvatar({avatar: this.upFileName})
				//更新缓存的用户信息
				this.$u.utils.updateUser()
				this.$u.toast('更新成功')
			}
		}
	}
</script>

<style>

</style>